disk devices in F9 interchanged

[Denis Leroy]

Joachim Backes wrote:
> I my actual F8, I have 2 disk devices: One Sata-Disk: /dev/sda, and 1 
> IDE-Disk: /dev/sdb.
> But in F9 Beta, these two disks seem to be interchanged (/dev/sda <--> 
> /dev/sdb). Is this true, and if yes, why?

Device names are by definition somewhat arbitrary and should never be 
relied upon. For example, if you boot your system with an USB key 
plugged-in, the kernel might very well decide to assign /dev/sda to the 
USB key, shifting all other device names by one letter.

Mounting by label is a good alternative, but you can also mount disks by 
ID or UUID (using /dev/disk/by-*/ device names).